NTA JEE Main 30th January 2023 Shift 1
For the following questions answer them individually
NTA JEE Main 30th January 2023 Shift 1 - Question 31
Match List - I with List - II
| LIST-I (Atomic number) | LIST-II (Block of periodic table) |
|---|---|
| (A) 37 | I. p-block |
| (B) 78 | II. d-block |
| (C) 52 | III. f-block |
| (D) 65 | IV. s-block |
Choose the correct answer from the options given below:
NTA JEE Main 30th January 2023 Shift 1 - Question 32
For OF$$_2$$ molecule consider the following:
(A) Number of lone pairs on oxygen is 2.
(B) FOF angle is less than 104.5°.
(C) Oxidation state of O is -2.
(D) Molecule is bent 'V' shaped.
(E) Molecular geometry is linear.
Correct options are:
NTA JEE Main 30th January 2023 Shift 1 - Question 33
Match List I with List II
| List I (molecules/ions) | List II (No. of lone pairs of e$$^-$$ on central atom) |
|---|---|
| (A) IF$$_7$$ | I. Three |
| (B) ICl$$_4^-$$ | II. One |
| (C) XeF$$_6$$ | III. Two |
| (D) XeF$$_2$$ | IV. Zero |
Choose the correct answer from the options given below:
NTA JEE Main 30th January 2023 Shift 1 - Question 34
The alkaline earth metal sulphate(s) which are readily soluble in water is/are:
(A) BeSO$$_4$$
(B) MgSO$$_4$$
(C) CaSO$$_4$$
(D) SrSO$$_4$$
(E) BaSO$$_4$$
Choose the correct answer from the options below:
NTA JEE Main 30th January 2023 Shift 1 - Question 35
Lithium aluminium hydride can be prepared from the reaction of
NTA JEE Main 30th January 2023 Shift 1 - Question 36
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): In expensive scientific instruments, silica gel is kept in watch-glasses or in semipermeable membrane bags.
Reason (R): Silica gel adsorbs moisture from air via adsorption, thus protects the instrument from water corrosion (rusting) and / or prevents malfunctioning.
In the light of the above statements, choose the correct answer from the options given below:
NTA JEE Main 30th January 2023 Shift 1 - Question 37
What is the correct order of acidity of the protons marked $$A - D$$ in the given compounds?
NTA JEE Main 30th January 2023 Shift 1 - Question 38
The major products 'A' and 'B', respectively, are
NTA JEE Main 30th January 2023 Shift 1 - Question 39
Formation of photochemical smog involves the following reaction in which A, B and C are respectively.
(i) NO$$_2$$ $$\xrightarrow{h\nu}$$ A + B
(ii) B + O$$_2$$ $$\to$$ C
(iii) A + C $$\to$$ NO$$_2$$ + O$$_2$$
Choose the correct answer from the options below:
NTA JEE Main 30th January 2023 Shift 1 - Question 40
In the extraction of copper, its sulphide ore is heated in a reverberatory furnace after mixing with silica to:
